One of our regular contractors was asked to install a competitors specified AHU on a pharmaceutical clean room project. Due to a mix up between our client and the end user the 10m3/s AHU was delivered to site in one piece rather than in sections as had been anticipated. Therefore to enable the unit to be fitted it needed to be flat packed and rebuilt on site. Our site services team attended site at short notice, stripped down the AHU, manoeuvred it to the required position and rebuilt all within less than 3 days. The AHU manufacturer refused to undertake such works either on site or at their factory within the required time scales. As a result the supplier was removed as preferred supplier and we have subsequently provided ten new AHU’s to the clients other UK sites.